Water resources are the most widely distributed and largest resources in the world. Water covers more than 70% of the Earth's surface, totaling 1.5 billion cubic kilometers; it is also the most developed and utilized resource in the world. However, freshwater resources only account for about 2.53% of the total amount of water on the earth. Nearly 70% of them are solid glaciers. Nearly 70% of the water is used for irrigation of agriculture. To save water, reasonable irrigation must be done. Only the soil is understood. The amount of water needed to be properly irrigated can be measured using a soil moisture meter. Ningbo Yinzhou Leisheng Machinery Co.,Ltd , https://www.nblscasting.com
China belongs to the list of water-short countries. The per capita freshwater resources are only 1/4 of the world's per capita, ranking 109th in the world. China has been listed as one of the 13 poorest countries in the world with per capita water resources. In addition, it is unevenly distributed and a large number of freshwater resources are concentrated in the south. The freshwater resources in the north are only 1/4 of that in the south. The increasingly serious water pollution has not only reduced the function of water bodies, further exacerbated the contradiction of water resources shortage, and had a serious impact on the sustainable development strategy China is implementing. It has also seriously threatened the safety of drinking water for urban residents and the people. Health. From these data, it can be seen that China’s water resources are scarce, so saving water is necessary, and this is mainly done from agriculture. The most needed water in agriculture is irrigation and irrigation. Excessive water can not be absorbed but this practice is caused by land salinization. In this way, not only does the rational use of river water resources harm the environment. A soil moisture meter can be used to measure the soil moisture content and perform proper irrigation so that the water resources can be used well.
The RS-232 communication interface communicates with the computer. The dedicated data download software can directly measure the soil moisture value, and can also store the measured moisture content data in real time, and increase the GPS positioning function. While measuring the soil moisture content, it is possible to determine the precise information (latitude and longitude) of the measurement point, display the position information of the sampling point at any time, and store the position, moisture, group number, etc. into the host computer or through the computer. Export. Therefore, it can reflect the spatial difference of soil moisture. Not only is it beneficial to the implementation of water-saving irrigation, but the precise water supply also helps to increase the yield and quality of crops. The automatic sampling and processing of water content and three-dimensional position information are realized. The signals of sensors and GPS receivers are processed and the corresponding data are calculated. The functions of display, storage and communication are available, and the distribution of moisture can be analyzed in the computer. .